number.wiki
Number

127

127 is a prime, odd, a calendar year.

Cousin Prime Deficient Number Mersenne Prime Prime Squarefree Year

Properties

Parity
Odd
Digit count
3
Digit sum
10
Digital root
1
Palindrome
No
Divisor count
2
σ(n) — sum of divisors
128

Primality

127 is prime. It has exactly two divisors: 1 and itself.

Divisors & multiples

All divisors (2)
1 · 127
Aliquot sum (sum of proper divisors): 1
Factor pairs (a × b = 127)
1 × 127
First multiples
127 · 254 · 381 · 508 · 635 · 762 · 889 · 1,016 · 1,143 · 1,270

Representations

In words
one hundred twenty-seven
Ordinal
127th
Roman numeral
CXXVII
Binary
1111111
Octal
177
Hexadecimal
7F

Also seen as

Prime neighborhood

Adjacent primes:

  • Previous prime: 113 (gap of 14)
  • Next prime: 131 (gap of 4)

Pair status: cousin with 131.

ASCII character

As an ASCII codepoint, 127 is DEL (delete). ASCII control character.

Hex color
#00007F
RGB(0, 0, 127)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.0.127.